The correct answer is D) Woodrow Wilson.
The US president during world war I was Woodrow Wilson.
Woodrow Wilson (1856-1924) was the 28th President of the United States, and the one who conducted the US throughout World Was 1.
He tried to maintain the neutral foreign policy but a couple of incidents made him enter the war: the sinking of the Lusitania ship and the interception of the Zimmerman telegram in which Germany asked the support of Mexico. After the war and during the Treaty of Versailles, he elaborated his "14 points" to maintain a long-lasting peace in Europe.